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2 Sheets-Sheet 1.

H. A. HOUSE & H. A. HOUSE, Jr. TUBULUUS STEAM BUILER.

No. 521,164. Patented June 12, 1894.

(No Model.)

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(N0 Model.) 2 sheets-sheet 2.

H. A. HOUSE 8v H. A. HOUSE-Jr.

TUBULOUS STEAM BOILBR. No. 521,164. Patented June 12, 1894. A

NITED STATES PATENT OFFICE.

HENRY A. HOUSE AND HENRY A. HOUSE, JR., OF BRIDGEPORT, CONNECTI- CUT, ASSIGNORS OF ONE-HALF TO ROBERT RINTOUL SYMON, OF LONDON, ENGLAND. l

TUBULOUS STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 521,164, dated June 12, 1894.

Application filed July 13. 1893. Serial No. 480,416. (No model.) Patented in England September 13, 1893, No. 17,224.

To all whom t may concern: scribe the same with reference to the annexed 5o Be it known that we, HENRY ALONZO HOUSE drawings, in whichand HENRY ALONZO HOUSE, J r., mechanical Figure 1 is a longitudinal sectional elevaengineers, both citizens of the United States tion of a boiler of the kind referred to with 5 of America, and both temporarily residing at the usual inclosing casing removed; Fig. 2 a

Teddington, county of Surrey, England, but transverse sectional elevation taken on line usually of Bridgeport, county of Fairfield, and X-X of Fig. 1, and Fig. 3 a sectional eleva- State of Connecticut, United States of Amerition, to a much larger scale than Fig. 1, of ca, have invented a certain new and useful the upper or steam chamber taken on the line 1o Improvement in Tubulous Steam-Boilers, (for Y-Y of that figure.

which we have obtained a patent in Great A represents the lower or water collectors 6o Britain, No. 17,224, dated September 13, 1893,) or chambers, A pipes connectinglthe said of which the following is a specification. collectors or chambers together, B the upper, These improvements relate to that kind of or steam and water chamber, C the series of I5 tubulous steam boiler in which water-collecheating tubes which are subjected to the actors or chambers below are connected with a tion of the tire contained in the furnace space steam and water chamber above, first, by a CX, their lower ends opening into the water series of water tubes the lower ends of which collectors A and their upper ends into the are connected with the said lower water colsteam space of the. upper chamber B. zo lectors or chambers, and the upper ends with D are return circulating pipes connecting the steam space of the upper chamber; such the water 'collectors A with the water space 7o water tubes being exposed to the action of of the upper chamber B. the ire for the purpose of heating the water E is the anti-priming steamy pipe for takin them,and secondly by certain pipes which ing-od the steam from the chamber B to the 2 5 connect the said lower water collectors or point where it is to be used.

chambers with the water space of the upper The action of boilers of this kind is well chamber, and serve as circulating pipes for understood but we will shortly describe it in returning to the lower chambers any water order to make clear the connection of our incarried up into the upper chamber by the vention with such boilers. The fire, whether 5o heating tubes, such return circulating pipes of solid fuel or gas contained in the space OX being generally placed where they are not heats the series of pipes O and consequently 8o subject to the action of the fire. And the obthe water in them; this water becomes partly ject of the improvements is in the first place converted into steam and rises into the steam to provide means for delivering any water chamber B accompanied by a portion of the 35 that may be carried up through the heating heated water which is more or less deposited tubes along wit-h the steam, into the upper at the bottom of the chamber B, and returns chamber in such manner that it is directed by the circulating pipes D to the water colaway from the steam outlet pipe, and on to lectors A so that there is a continual circulathe water contained in such upper chamber tion of water up the heating pipes O from 4o so as to avoid priming, and in the second the collectors Ato the steam chamberB, and

place to provide means for preventing the from the latter through the pipes D back to 9o water in the said upper chamber from runthe collectors A, the steam passing off by the ning to one end thereof thereby preventing pipe E. But as the steam chamber Bis usuproper circulation at the opposite end, when, ally of small diameter there'is danger of part 45 as often happens in such boilers when they of the Water delivered into 1t by the pipes C are used on board ship,one end of the boiler being entrained into the steam pipe. To ob- 9 5 is raised higher than the other. vviate this, bande plates have been used oppo- In order that our said invention may be site to the ends of the pipes O to divertthe fully understood we will now proceed to dewater downward, but these battle plates have not given satisfactory results, and instead thereof we employ an arrangement of nozzles C projecting inward and downward from the ends of the pipes C as shown in Figs. 2 and 3.

C2 are short lengths of tube or nipples screwed into the shell of the chamber B, and provided at their outer ends with union nuts C3 which secure the trumpet-mouthed ends of the pipes C to the conical end of the tube C2. The nozzles C rest by flanges at their outer ends on the ends of the tubes or nipples C2; they pass easily through the short tubes C2 and project radially into the chamber B as shown. By these means the nozzles C which are subject to a certain amount of wear and tear by the rapid passage of steam and water through them can be easily removed and fresh ones put into their place when necessary. These nozzles forcibly project the water downward onto the surface of that already in the chamber B in a direction below the level of the steam pipe E, thus preventing such water from rising with the steam to the holes in the said steam pipe.

When the boiler stands horizontally the wa ter in the steam chamber B circulates back to the water collectors A by both end circulation pipesD D; but when the boiler is raised higher at one end than at the other, as shown in Fig. 1, by the pitching or other change in position of the ship or boat in which it may be placed, the water in the steam chamber runs to the lower end, and sometimes uncovers the circulating pipes D at the upper end so that there can be no circulation through those pipes. To obviate this inconvenience we employ return circulating pipes D placed at or near the middle of the length of the water collectors A and steam chamber B, and we fit a swiveling plate F transversely in the chamber B. This plate is swiveled or hinged at F' over the circulating pipes D. It is shaped to nearly fit the lower part of the in ternal circumference of the chamber B but to remain free to swing therein. x Projecting parts F"l of the plate F enter the upper ends of the pipes D. When the boileris horizontal the plate F hangs plumb over these pipes so that circulation of water can go on through them from each side of the plate; but when either end of the boiler falls lower than the other the plate F swings on its hinges F until its projections F2 come to bear against the lower side of the pipes D as shown in Fig. 1 and the water in the higher half of the chamber B heaps up against the plate F and is prevented thereby from rushing to the lower end of the boiler but circulates through the tubes D', the water in the lower part of the chamber B alone going to the pipes D at the lower end. This arrangement also assists in retaining suiiicient water in the upper half ot the steam chamber B to secure circulation thereof through the pipes D at the upper end of the said chamber.

l. In atubulous boiler of the kind described the combination with the lower collector chamber and the upper steam and water chamber of the series of heating pipes connecting the two, of nozzles connected to the ends ot the heating pipes and projecting from above downward into the upper steam chamber so as to project the water in a direction below the level of the steam pipe, and having their open ends above the normal level of the water in said upper chamber, as set forth.

2. The combination with the lower collector chambers, the upper steam and water chamber and the intermediate heating pipes of a tubulons boiler, of short tubes or nipples entering the steam chamber nozzles extending through the same int-o the said chamber and having their open ends above the normal level of the water therein, and union nuts connecting the said nipples with the ends ot' the heating pipes as set forth.

3. The combination with the lower collector chambers the upper steam and water chamber, the heating pipes and the circulating pipes connecting the two chambers at the ends and at intermediate points, of a swiveled or hinged plate of approximately the diame ter of the water chamber and suspended over the intermediate circulating pipes and capable of limited swing or play in opposite directions as set forth.

In witness whereof we have hereunto set our hands in presence ot' two witnesses.

HENRY A. HOUSE. HENRY A. HOUSE, JUNIOR. Witnesses:

WILLIAM HENRY BECK, STEPHEN EDWARD GUNYON,

Both of 115 Ccmnon Street, Lon/Ion. 

